Finding the Fourth Proportional to 13,077.45, 19,612.33 and 5,680.13

Step by Step Solution

1. Step 1: Write the proportion equation
   13,077.45 : 19,612.33 = 5,680.13 : x
2. Step 2: Convert to fraction form
   13,077.45/19,612.33 = 5,680.13/x
3. Step 3: Cross multiply
   13,077.45x = 19,612.33 × 5,680.13
4. Step 4: Simplify right side
   13,077.45x = 111,400,471.74
5. Step 5: Solve for x
   x = 111,400,471.74/13,077.45
6. Step 6: Final answer
   x = 8,518.52